The Kardashians are known for promoting that sports luxe trend. Check out Kourtney here in a basic red hodie.

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Cosy cruisers: The mother-of-three stepped out in a pair of comfy Vans Old Skool sneakers

May the Lord be with you: Scott Disick wore purple velour trousers to dinner at Tosconova in Calabasas

Catching up: Scott was joined by pal Eric Monopoly

The older sister of Kim Kardashian also posted several photos of her ride for the day - a bright blue BMW i8 - which she borrowed from her on-off beau Scott Disick, 33.

Meanwhile, Kourtney, who shares her three kids - Mason, seven, Penelope, four, and Reign, two - with Scott, put on another party for her two sons who have the same birthday.

The proud mum took to her KourtneyKardashian.com site and shared snapshots from Mason's birthday, who shares the same date with younger brother, Reign.

Make a wish! Kourtney shared a Snapchat video as she and her other friends sang Happy Birthday to Melissa, who opted for a large cookie cake

'Blue' Beamer: Kourtney also showed off her ride for the day - a bright blue BMW i8 - which she borrowed from her on-off beau Scott Disick, 33

Luxury ride: Kourtney also posted an image of herself behind the driver's wheel

'Mason and Reign share the same birthday so every year we throw them a big joint party,' Kourtney wrote in her post. 'This year, Mason wanted a Fast and the Furious theme complete with a monster truck bouncy house slide, mini race track, and the actual car from the movie.'

And she came through with every detail as she captioned each photo for her fans.

'All decorated for the party, monster truck bouncy house slide and all!' she wrote alongside of the gigantic inflatable structure.

She also shared a family photo with Scott and their three kids as she donned black leather trousers and American flag bandana.

Happy home: Kourtney also shared a family photo with Scott and their three kids - Mason, seven, Penelope, four, and Reign, two - on her KourtneyKardashian.com site

Birthday bash! The proud mum put on a The Fast and The Furious party for her two sons, Mason and Reign, who have the same birthday

'All decorated for the party!': She included a gigantic monster truck bouncy house for the kids to play with